9189938902 has 32 divisors (see below), whose sum is σ = 14530777344. Its totient is φ = 4353523200.

The previous prime is 9189938893. The next prime is 9189938917. The reversal of 9189938902 is 2098399819.

9189938902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612652 + ... + 627472.

It is an arithmetic number, because the mean of its divisors is an integer number (454086792).

Almost surely, 2^9189938902 is an apocalyptic number.

9189938902 is a deficient number, since it is larger than the sum of its proper divisors (5340838442).

9189938902 is a wasteful number, since it uses less digits than its factorization.

9189938902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15064.

The product of its (nonzero) digits is 2519424, while the sum is 58.

The square root of 9189938902 is about 95864.1690205470. The cubic root of 9189938902 is about 2094.6149938717.

The spelling of 9189938902 in words is "nine billion, one hundred eighty-nine million, nine hundred thirty-eight thousand, nine hundred two".